如何用关键字const在类中定义一个常量整数？ [英] How to define a constant integer inside a class with keyword const ?
问题描述
我知道这是非法的：
类XYZ {
const int myConst = 1;
....};
但是，这是否意味着我必须使用#define？
谢谢
I know this is illegal:
class XYZ {
const int myConst = 1;
....};
But then, does it mean I have to use #define ?
Thanks
推荐答案
b83503104写道：
b83503104 wrote:
我知道这是非法的：
类XYZ {
const int myConst = 1;
...};
但是，这是否意味着我必须使用#define？
I know this is illegal:
class XYZ {
const int myConst = 1;
...};
But then, does it mean I have to use #define ?
不，你不必使用#define来定义一个常量C ++。
No, you don''t have to use #define to define a constant in C++.
" b83503104" < B8 ******* @ yahoo.com>在消息中写道
news：73 ************************** @ posting.google.c om ...
"b83503104" <b8*******@yahoo.com> wrote in message
news:73**************************@posting.google.c om...
我知道这是非法的：
类XYZ {
const int myConst = 1;
...};
然后，这是否意味着我必须使用#define？
谢谢
I know this is illegal:
class XYZ {
const int myConst = 1;
...};
But then, does it mean I have to use #define ?
Thanks
类XYZ {
static const int myConst = 1;
...};
现在它是合法的。你也可以考虑
类XYZ {
enum {myConst = 1};
...};
不要使用#define，无论你做什么。除了别的什么#defines
从不在课堂上。
john
class XYZ {
static const int myConst = 1;
...};
Now its legal. You could also consider
class XYZ {
enum { myConst = 1 };
...};
Don''t use a #define what ever you do. Apart from anything else #defines are
never inside a class.
john
Jeff Schwab发表：
Jeff Schwab posted:
b83503104写道：
b83503104 wrote:
我知道这是非法的：
类XYZ {
const int myConst = 1;
I know this is illegal:
class XYZ {
const int myConst = 1;
...};
But then, does it mean I have to use #define ?
不，你不必使用#define用C ++定义一个常量。
No, you don''t have to use #define to define a constant in C++.
不是很有用。实际上很无知。混蛋。
这就是它的完成方式：
class XYZ
{
public：
const unsigned int chocolate;
XYZ（无效）：巧克力（53）
{
}
};
如果它是一个静态变量，它就是这样完成的：
类XYZ
{
public
static const unsigned int chocolate;
XYZ（无效）
{
}
};
const unsigned int XYZ :: chocolate = 53;
希望有所帮助。
-JKop
Not very helpful. Quite ignorant actually. Asshole.
Here''s how it''s done:
class XYZ
{
public:
const unsigned int chocolate;
XYZ(void) : chocolate(53)
{
}
};
If it''s a static variable, it''s done as so:
class XYZ
{
public
static const unsigned int chocolate;
XYZ(void)
{
}
};
const unsigned int XYZ::chocolate = 53;
Hope that helps.
-JKop
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